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Search Results: 1 - 10 of 326082 matches for " Paulo de T. da Cunha; "
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Atividade reprodutiva de Bairdiella ronchus (Cuvier) (Pisces, Sciaenidae) na Baía de Guaratuba, Paraná, Brasil
Chaves, Paulo de T. da Cunha;
Revista Brasileira de Zoologia , 1995, DOI: 10.1590/S0101-81751995000400005
Abstract: bairdiella ronchus is one of the most common species of demersal ichthyofauna in guaratuba bay, south brazil. however, this study reveals that is does not inhabits permanently the mangroove area. individuals with more than 94mm total lenght leave mangroove area in late summer and early auntumn and returming in the spring. when they start ovarian veitellogenesis. during late spring and early summer, the oocytes are hydrated, and empty follicles can be found in the ovaries, indicating that this is the reproductive time for this species as other sciaenidae. b. ronchus is a multiple spawner species.
Influência do zinco na incidência de doen?as do cafeeiro
Carvalho, Vicente Luiz de;Cunha, Rodrigo Luz da;Guimar?es, Paulo Tácito Gontijo;Carvalho, J?ao Paulo Felicori;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000300015
Abstract: the are few studies have been done related to the increase or decrease of disease resistance in coffee plants, with alteration from plant nutrient levels. the ain of this work was to verify the effect of zinc sulfate, applied either alone or in association with fungicides, and the effect of potassium chloride on coffee leaf rust, brown-eyes and leaf stains in coffee plants. copper oxichloride, tebuconazole, sulfate of zinc + potassium chloride and sulfate of zinc were applied on plots and concentrations of zinc sulfate (0,0 %, 0,3 %, 0,6 % and 1,2 %) were applied on sub plot. treatments with copper and tebuconazole reduced the incidence and severity of rust, the incidence of brown-eyes and stains leaf (phoma and ascochyta) and the defoliate independent of the zinc sulfate concentrations. concentration of zinc sulfate varying from 0,6 % to 0,75 % shawed less rust severity. as the concentration of zinc sulfate increased, the severity of brown-eyes disease, leaf stains (phoma and ascochyta) and coffee defoliate tree also increased.
Tratamento de mamas tuberosas com incis?es combinadas
Silva Neto, Manoel Pereira;Colombo, Luciana Rodrigues da Cunha;Silva, Diego de Paiva;Guimar?es, Paulo Magno Santos;Almeida, Cynthia Ottaiano Rodrigues;Batista, Adriano Peduti;Chaem, Luiz Humberto Toyoso;Cunha, Marco Túlio Rodrigues da;
Revista Brasileira de Cirurgia Plástica , 2012, DOI: 10.1590/S1983-51752012000300016
Abstract: background: tuberous breast deformity is a rare entity, first described by rees and aston in 1976. in this condition, breast development is altered, with herniation of the parenchyma through the nipple-areolar complex, enlargement of this structure, and hypoplasia of the breast tissue, especially in the lower quadrants. the breast thus acquires a tubular shape rather than the natural conical look. methods: four patients underwent a single surgical treatment, with combined inframammary and periareolar incisions. technical details must be individualized for each case depending on the severity and classification type of the tuberous breasts. results: the surgical procedure used covers all aspects of tuberous breast deformity in a single-stage operation. revision of periareolar surgery scar was not necessary in any case. in all cases, the final aesthetic result was satisfactory for the patient and the surgeon. the procedure adopted does not interfere with future lactation. conclusions: tuberous breast represents a real therapeutic challenge. the technique reported herein is very attractive and provides reliable and reproducible results.
Desenvolvimento dos ovócitos em Harengula clupeola, Urophycis brasiliensis, Eucinostomus argenteus, Isopisthus parvipinnis e Menticirrhus americanus (Teleostei)
Chaves, Paulo de Tarso da Cunha;
Boletim do Instituto Oceanográfico , 1989, DOI: 10.1590/S0373-55241989000200001
Abstract: the phases of the oocyte involved in the ovarian maturation were histologically described for five teleosts species from s?o paulo coast. it was observed that the oocyte development is group-synchronous in more than two batches, suggesting multiple spawnings per season. using the greeley jr. et al method (1987), the oocyte size was obtained in each phase, according to the species. the approximate diameters in which the oocytes enter the vitellogenesis and preovulatory hydration were, respectively (in μm): 140 and 580 in harengula clupeola, 100 and 480 in urophycis brasiliensis, 140 and 480 in eucinostomus argenteus, 140 and 640 in isopisthus parvipinnis, and 100 and 540 in menticirrhus americanus. data presented may contribute for future life cycle studies of these species, by helping the identification of the ovarian maturation level of the considered specimens, using oocyte morphometric measures.
Desenvolvimento dos ovócitos em Harengula clupeola, Urophycis brasiliensis, Eucinostomus argenteus, Isopisthus parvipinnis e Menticirrhus americanus (Teleostei)
Chaves, Paulo de Tarso da Cunha;
Brazilian Journal of Oceanography , 1989, DOI: 10.1590/S1679-87591989000200001
Abstract: the phases of the oocyte involved in the ovarian maturation were histologically described for five teleosts species from s?o paulo coast. it was observed that the oocyte development is group-synchronous in more than two batches, suggesting multiple spawnings per season. using the greeley jr. et al method (1987), the oocyte size was obtained in each phase, according to the species. the approximate diameters in which the oocytes enter the vitellogenesis and preovulatory hydration were, respectively (in μm): 140 and 580 in harengula clupeola, 100 and 480 in urophycis brasiliensis, 140 and 480 in eucinostomus argenteus, 140 and 640 in isopisthus parvipinnis, and 100 and 540 in menticirrhus americanus. data presented may contribute for future life cycle studies of these species, by helping the identification of the ovarian maturation level of the considered specimens, using oocyte morphometric measures.
Estrutura populacional de Pomadasys corvinaeformis (Steindachner) (Teleostei, Haemulidae) na Baía de Guaratuba, Paraná, Brasil
Chaves, Paulo de Tarso da Cunha;
Revista Brasileira de Zoologia , 1998, DOI: 10.1590/S0101-81751998000100018
Abstract: reproductive and biometrical analyses were pertormed on 1629 individuals of p. corvinaeformis collected monthly from october 1993 to september 1996, at guaratuba bay, southern brazilian coast. the results indicate that the species is more abundant in the mangrove area during winter, when the largest individuais were collected, and spring, when the water temperature is lower and the salinity higher than summer or autumn. the relationship of body weight to body length, for grouped sexes, is "lntw= -12,0456 + 3,1831 lntl". the monthly condition factor is highest during summer and lowest during winter. it is suggested that p. corvinaeformis is present in the mangrove area during a specific etape of its life cycle and does not use this area to maturation and spawn.
Hidrata??o pré-ovulatória em peixes: um caráter de oriyem marinha?
Chaves, Paulo de Tarso da Cunha;
Revista Brasileira de Zoologia , 1989, DOI: 10.1590/S0101-81751989000300007
Abstract: based on original and literature data, this study discusses the close relationship that seems to exist between the pre-ovulatory hydratation (poh) on fish oocytes and the marine environment, contrasting with the absence of this process on freshwater species. the difference is mainly explained by the necessity or not of intraoocitary water on eggs flutuation, in one or another situation, according to the surroundings. once accepted this hipothesis, it is proposed that poh should be an efficient indicator of the adaptation to freshwater environment in fish species originated from marine groups.
Aspectos do desenvolvimento ovocitário no peixe-pulmonado Sul-americano, Lepidosiren paradoxa Fitzinger (Dipnoi)
Chaves, Paulo de Tarso da Cunha;
Revista Brasileira de Zoologia , 1992, DOI: 10.1590/S0101-81751992000100011
Abstract: histological changes in the oocyte development of south american lungfish are described. during maturation, pre-vitellogenic and vitellogenic phases could be distinguished, and they are similar to those of teleost fishes.
Condi o reprodutiva da betara preta, Menticirrhus americanus (Teleostei, Sciaenidae), na pesca realizada no litoral norte de Santa Catarina, Brasil = Reproductive status of Menticirrhus americanus (Teleostei, Sciaenidae) in fisheries performed on the Southern coast of Brazil
Elneison da Rosa Muniz,Paulo de Tarso da Cunha Chaves
Acta Scientiarum : Biological Sciences , 2008,
Abstract: No litoral brasileiro, a legisla o costuma regular as práticas pesqueiras segundo o ciclo de vida das espécies-alvo, mas o fato deste n o ser coincidente entre as espécies dominantesnas capturas dificulta o manejo em pescarias multiespecíficas. No litoral de Santa Catarina, o defeso aplica-se apenas à pesca de arrasto, e para tal considera o período reprodutivo do camar osete-barbas, Xyphopenaeus kroyeri. O presente trabalho investiga a incidência da atividade pesqueira sobre indivíduos em reprodu o da betara preta, Menticirrhus americanus, espécie comercialmenteapreciada e frequente nas pescarias. As amostragens ocorreram em 2006 e 2007, em desembarques do município de Itapoá, norte do Estado (26°00’S; 48°36’W). Calcularam-se os valores de propor o sexual, frequência de estádios de matura o, índice gonadossomático etamanho de primeira matura o, e relacionou-se a captura de indivíduos em reprodu o com a época do ano e a arte de pesca utilizada. Concluiu-se que a atividade pesqueira incide sobre umaparcela populacional que compreende indivíduos em atividade reprodutiva durante, ao menos, duas esta es do ano. Há diferen as entre as artes de pesca: a de arrasto n o atinge indivíduos emreprodu o; a de caceio atua majoritariamente sobre jovens e em matura o; e a de fundeio, principalmente sobre indivíduos em atividade reprodutiva, sobretudo na primavera e no ver o. Fisheries rules usually take into account the life cycle of target species. But as these species differ, multi-specific fisheries provedifficult to be managed. In the southern coast of Brazil (26°00’S, 48°36’W), an annual closed fishing season is exclusive to trawling only, which target species such as the shrimp Xyphopenaeuskroyeri. In this region, the consequences of trawling and gillnets on the life cycles of fish remain unknown. The present work has surveyed the incidence of small-scale fisheries on the reproductive cycle of the Sciaenidae Menticirrhus americanus. Landings were sampled in 2006 and 2007, and sexual ratio, seasonal distribution of gonadal stages, gonadossomatic index and length at first maturity were estimated. Catches of reproductive individuals were analyzed according tothe fishing season and fishing gears employed. Resultes showed that catches of Menticirrhus americanus include, at least during two seasons per year, individuals in breeding activity. Trawlingdoes not catch maturing, mature or ripe specimens; gillnets of the caceio type act mainly on young and maturing individuals; and gillnets of the fundeio type act mainly on mature and ripeindividuals, in spring and
Compara??o das técnicas de turbinectomia com laser de CO2 e laser a diodo
Cintra, Pedro Paulo Vivacqua da Cunha;Lima, Wilma T. Anselmo;
Revista Brasileira de Otorrinolaringologia , 2003, DOI: 10.1590/S0034-72992003000500005
Abstract: we describe an evaluation of the techniques aiming to reduce the bulk of inferior turbinates with the diode laser and the co2 laser, as well as a comparison between the techniques. study design: longitudinal cohort. material and method: sixty patients with turbinate hypertrophy were submitted to the submucous diode laser reduction and co2 with a follow up period of 6 months following a established protocol concerning pain, bleeding and subjective evaluation of the nasal obstruction preoperatively and postoperatively. results: the procedures showed a low level of bleeding and no packing was necessary in all patients. we observed that the patients were very pleased concerning the nasal obstruction postoperatively. conclusion: the primary goal of the inferior turbinectomy is to reduce the patient complain of nasal obstruction with less discomfort, morbidity and complications during and after the procedure. the laser reduction showed in this study good results in a 6-month follow up. further studies must be done to evaluate the results in a longer follow up.
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